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Debt and Credit Facilities (Tables)
 9 Months Ended
Sep. 30, 2017
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments
The following table summarizes significant debt issuances (in millions). Refer to the "Available Credit Facilities" section below regarding amounts issued under the Three Year Revolver and the Piedmont Term Loan facilities.
 
 
 
 
Nine Months Ended September 30, 2017
 
 
 
 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
Maturity
Interest

 
Duke

 
Energy

 
Energy

 
Energy

 
Energy

Issuance Date
Date
Rate

 
Energy

 
(Parent)

 
Progress

 
Florida

 
Ohio

Unsecured Debt
 
 
 
 
 
 
 
 
 
 
 
 
April 2017(a)
April 2025
3.364
%
 
$
420

 
$
420

 
$
—

 
$
—

 
$
—

June 2017(b)
June 2020
2.100
%
 
330

 
330

 
—

 
—

 
—

August 2017(c)
August 2022
2.400
%
 
500

 
500

 
—

 
—

 
—

August 2017(c)
August 2027
3.150
%
 
750

 
750

 
—

 
—

 
—

August 2017(c)
August 2047
3.950
%
 
500

 
500

 
—

 
—

 
—

Secured Debt
 
 
 
 
 
 
 
 
 
 
 
 
February 2017(d)
June 2034
4.120
%
 
587

 
—

 
—

 
—

 
—

August 2017(e)
December 2036
4.110
%
 
233

 
—

 
—

 
—

 
—

First Mortgage Bonds
 
 
 
 
 
 
 
 
 
 
 
 
January 2017(f)
January 2020
1.850
%
 
250

 
—

 
—

 
250

 
—

January 2017(f)
January 2027
3.200
%
 
650

 
—

 
—

 
650

 
—

March 2017(g)
June 2046
3.700
%

100


—

 
—

 
—

 
100

September 2017(h)
September 2020
1.500
%
(i) 
300


—

 
300

 
—

 
—

September 2017(h)
September 2047
3.600
%
 
500

 
—

 
500

 
—

 
—

Total issuances
 
 
 
$
5,120

 
$
2,500


$
800

 
$
900


$
100

(a)
Proceeds were used to refinance $400 million of unsecured debt at maturity and to repay a portion of outstanding commercial paper.
(b)
Debt issued to repay a portion of outstanding commercial paper.
(c)
Debt issued to repay at maturity $700 million of unsecured debt, to repay outstanding commercial paper and for general corporate purposes.
(d)
Portfolio financing of four Texas and Oklahoma wind facilities. Secured by substantially all of the assets of these wind facilities and nonrecourse to Duke Energy. Proceeds were used to reimburse Duke Energy for a portion of previously funded construction expenditures.
(e)
Portfolio financing of eight solar facilities located in California, Colorado and New Mexico. Secured by substantially all of the assets of these solar facilities and nonrecourse to Duke Energy. Proceeds were used to reimburse Duke Energy for a portion of previously funded construction expenditures.
(f)
Debt issued to fund capital expenditures for ongoing construction and capital maintenance, to repay a $250 million aggregate principal amount of bonds at maturity and for general corporate purposes.
(g)
Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance and for general corporate purposes.
(h)
Debt issued to repay at maturity a $200 million aggregate principal amount of bonds due November 2017, pay down intercompany short-term debt and for general corporate purposes, including capital expenditures.
(i)    Debt issuance has a floating interest rate.
The following table shows the significant components of Current Maturities of Long-Term Debt on the Condensed Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.
(in millions)
Maturity Date
 
Interest Rate

 
September 30, 2017

Unsecured Debt
 
 
 
 
 
Duke Energy (Parent)
June 2018
 
6.250
%
 
$
250

Duke Energy (Parent)
June 2018
 
2.100
%
 
500

First Mortgage Bonds
 
 
 
 
 
Duke Energy Progress
November 2017
 
1.516
%
(b) 
200

Duke Energy Carolinas
January 2018
 
5.250
%
 
400

Duke Energy Carolinas
April 2018
 
5.100
%
 
300

Duke Energy Florida
June 2018
 
5.650
%
 
500

Other(a)
 
 
 
 
335

Current maturities of long-term debt
 
 
 
 
$
2,485


(a)    Includes capital lease obligations, amortizing debt and small bullet maturities.
(b)    Debt issuance has a floating interest rate.
Schedule Of Line Of Credit Facilities
The table below includes the current borrowing sublimits and available capacity under the Master Credit Facility.
 
September 30, 2017
 


 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Energy

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
(Parent)

 
Carolinas

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Facility size(a)
$
8,000

 
$
2,850

 
$
1,350

 
$
1,250

 
$
1,000

 
$
450

 
$
600

 
$
500

Reduction to backstop issuances
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial paper(b)
(1,569
)
 
(404
)
 
(636
)
 
(150
)
 
—

 
(25
)
 
(150
)
 
(204
)
Outstanding letters of credit
(60
)
 
(51
)
 
(4
)
 
(2
)
 
(1
)
 
—

 
—

 
(2
)
Tax-exempt bonds
(81
)
 
—

 
—

 
—

 
—

 
—

 
(81
)
 
—

Coal ash set-aside
(500
)
 
—

 
(250
)
 
(250
)
 
—

 
—

 
—

 
—

Available capacity under the Master Credit Facility
$
5,790


$
2,395


$
460


$
848


$
999


$
425


$
369

 
$
294

(a)
Represents the sublimit of each borrower.
(b)
Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies on the Condensed Consolidated Balance Sheets.